for gavin entering campus is just a normal day because things are not changing, its all the same but there's one thing that's new and that is-

He interact with Maxine and he doesn't even know her at that time.

"Leo I Like You" Maxine say's and all of a sudden she look at him, see that she got the wrong person and apologize for that thing she do and ran away. Gavin's heartbeat change he felt something different and for almost 5 years he didn't feel that.